Coupling



Patented Aug'.. 1932v *l UNITED 4s'rA'rlas IIELAND S. ROSENEB, F SAN FBANCISO, CALIFQRNIA, SSIGNOB T COMPANIES, INC., or sAN FRANCISCO,

WARE

.Application led August '12, My invention relatesV to a coupling, and particularly to a coupling for temporarily joining sections of pipe as for example, while being wrapped with a protective strip. j

It is among the objects of my invention to provide a pipe coupling which will obviate the necessity of stopping the pipe wrappin machine after each section of pipe is wrappe A further object of my invention inclu es the provision of positively controlled means for dogging the coupling to the pipe section. The invention possesses numerous other'objects and 4features of advanta e, some o which, with the foregoing, will e set forth in the following description of my invention. It is to be understood that I do not limit myseli:` to this disclosure `of species of my invention, as I may adopt variant embodiments the couplingy showing particularly the construction of the wedge and dog actuating, mechanism. The plane of section is indicated by the line 2-2 of Figure 1.

In terms of broad inclusion the coupling embodying my invention includes an immechanism for the couding application No. 451,953 filed May 13` 1930. In the improved form shown herein, means are provided for positively actuating the dogs in both directions. The various portions of the coupling subjected to the greatest wear are formed separately; and are detachably fixed on the main body of the coupling so that they may be replaced as occasion deman s.

In terms of greater detail the coupling embodying. my cylin invention comprises a pair o drical frames 3 and 4. having an exterosely sections 6 land 7 which are to be temporarily joined; for example for a journey through a pipe wrappin lar machine. Suitable radially inserted in the pipe "rf sockets 8 are disposed, preferably at equal in a radial direction,

` assembly and rep f tapered threads 33.

PATENT. OFFICE.

0 THE PARAFFM A CORPORATION 0F DELA- CALIFORNIA,

CCUPLINC 1930. Serial No. 474,708.

ing serrated or toothed faces 11 disposed to engage the interior surfaces of the pipe sec- B5 tions. The dogs are actuated, pre erably through' the medium of the Shanks 12, preferably formed inte a1- ly with the dogs, and having the inc med grooves 13, and head 14 formed on their outer ends for engagement with inclined ways comprising the companion grooves an formed in a wedge block 16 which is frame.

n the wedge 16 is moved longitudinallyin the frame, the dogs will be forced in or out bythe interaction of the inclined engaging` surfaces.

o provide such lon thereof within the scope of the claims. itudinal motion for 20 i Referring to the drawing: the wedge, it is threa ed on a spindle 19 70 Figure 1 is a longitudinal section through journaled at one end in an end plate 21, and

the coupling of my invention. The plane of at the other end in a supporting boss 2 section is indicated by the line 1-1 of Fig- The end plate 21is removably held on the ure 2. frame by suitable screws 25, in order that the 25 Figure 2 is a transverse sectional view of interior of the coupling shall be accessible for 75 air.

The boss 22, in frame 4, is supported by an end diaphragm 23 reinforced by the arms 24; while theboss 22 in frame 3 is supported the varms 24 alone.

An enlarged head 26 is formed on one end of the spindle 19 to provide a socket 27, adapted .to receive a suitable wrench,and also to provide the shoulders 28 which restrain the spindle in an axial direction. The spindle is restrained further at its other end b a nut 29 threaded on the spindle and hel in lace by a pin 31 A hardened washer 32 5 1s interposed between the nut andA the-boss to provide a bearing surface between those two members.

Frames 3 and 4 are coupled together by the The external thread is formed on a conical plug 34 attached to the 23 by the bolts 36; and the in 37 formed inside Plug 34 could be formed indiaphragm ternal threa the two perte ofthe threaded joint, which de creases the sliding friction between them; and also permits the plug to he replaced after the threads become worn in use. rihe apertures 35 are provided in the arms 24 to give access to the bolts 36.

In order to better resist the shock and abra` sion incident to continued use, the continuous faces of the two frames are preferably armoured with a tougher material than is used in the frames. Accordingly frame 4 is protected by a ring 38, held in place hy the screws 39; and frame 3 is protected by a iianged sleeve 41, which is preferably shrunk on. ln addition to protecting the faces, the members 38 and 41 provide flanges to engage the pipe ends and aid inaligning and ho ding the coupling parts while they are being attached to e pipe sections.

As previously used primarily to join successive lengths, or sections of pipe during their journe through a wrapping or similar machine. qhen ernloyed in such service an operator inserts a game in the end of a pipe section, and dogs it in place byturning the spindle 19 with a suitable tool such as a brace plug wrench. It will be noted that as the operator presses the wrench into the socket the coupling will be approximately aligned hy the enge 'press`= in against the end of the pipe.

he section of pipe being rotated in the machine has a coup ing in its trailing end. succeeding section or pipe equipped with a suitable companion deluge in its leading end is brought into a position that will permit thethreads in the companion couplings to engage. The succeeding section need only he held lightly to prevent its rotation as the rotation of the section in the machine serves to run the coupling threads together. Similarly after a section oipipe hes passed through e wrapping machine the 'vvrepping is rst severed at the joint and then the wrapped section is unscrewed by preventing its rotetion which causes the rotation of the sec`1 tion in the machine to unscrevv the coupling threads. lin order not to interfere with suhsequent operations it is then desirable that the couplings be removed quickly from the wrapped section.

lt sometimes happens that the teeth on the dog faces will hog into the pipe and hold the couplings rather securely in piece;

Ahut hy having the'movement oi the dogs positively actueted inwardly es well es outwardly the dogs Acen alwsys loe broken lisce t ei couplings quickly removed.

claim:

l. vin coupling foe tempore-rily connecting e pair of pipe sections, frames adapted for mountin on the ends of seid sections, dogs on said reines, a wedge movshly mounted on each frame, means for positively con meeting the dogs and wedges, means for ce on each frame, means for mentioned this coupling is interengaging means operable to connect the frames for coupling the pipe sections together,

2., In a coupling for temporarily connecting a pair oi pipe sections, frames adapted for insertion in the ends of said sections, dogs on said frames, a wedge movably mounted positively connecting the docs and wedges, means for actuating the Wedges to move the dogs into locking engagement with the pipe sections, and interengaging means operable to connect the trames for coupling the pipe sections together.

3. ln a coupling for temporarily connectc ing a pair of pipe sections, frames adapted for mountin on the ends of said sections, dogs on said graines, a Wed e movably mounted on each frame, means ger positively connecting the dogs and wedges, and screw means for actuating the Wedges to move the dogs into locking engagement with the pipe sections, and interengaging means operable to connect the frames for coupling the pipe sec-z tions togethera d, lin a coupling for temporarily connect ing a pair of pipe sections, frames adapted for mounting on the ends of said sections,

en axially movable dogs on said frames,

Wedge mounted on each frame, means for positively connecting the dogs and -Wedges, ineens for actuating the wedges to move the dogs into locking engagement With the pipe sections, and interengaging means operable to connect the fremes for coupling the pipe sections togethero 5. ln e coupling for temporarily connect ing a pair ci pipe sections, frames adapted for mounting on the ends of seid sections, dogs on said frames, an axially movable wedge mounted on eech freine, ineens on the wedges for positively connecting the dogs thereto, e. spindle threaded eech Wedge for actuating the same to move the dogs into locking engagement with the pipe sections,

\ end interengaging Ineens operable to connect tue frames for coupling the pipe sections toE getiiero 6. ln e coupling for temporarily connecting e pair of pipe sections, iframes edepted for insertion in the ends of seid sections, dogs having inwardly extending mounted for radici movement seid iremos, e wedge having inclined flanged Ways theren on and mounted for axial movement in each of seid frames, heads on 'the shenls ing the angedweys on the wedges, encens 'or actuating Wedges to move the dogs into locking engagement with the pipe sections, sind interengcging means operehleto connect the frames for coupling the pipe secn tions together.

s coupling for temporarily connectframes adapte e sections, hollow oylinrical for insertion in the ends of said sections, radially extending dogs movu ably `mounted on said frames, a movably mounted wed e disposed within eac'i frame, means for positively connecting the dogs and wedges, means arxan ed within each frame for actuating the we ges to move the" dogs into locking engagement with the pipe sections, and interengaging means opera le to connect the frames for conping the pipe se@ tions' together.

In testimony whereof, have hereunto sei;

my hand.

LELAND S. RSENER ing e pair of pi 

